The HOS - E113 Hip stretcher mainly targets the muscle groups around the hips. When performing hip - stretching movements, gluteal muscles such as the gluteus maximus and gluteus medius will be stretched and exercised, which helps to enhance the strength and flexibility of the gluteal muscles and shape a more toned buttock line. Meanwhile, the hip adductors and abductors will also be fully stretched and stimulated during the stretching process, improving the flexibility and range of motion of the hips.